Automatically Detect Baud Rate Of Serial Port?

Jan 28, 2012

We have a weigh bridge connected to PC via serial port.A VB code fetches the data from serial port and puts it in clipboard,which can be used by other applications like SAP.

We have several different makes of weigh bridge at different locations, each with separate settings(baud rate,data bit,parity), hence we need to change the VB code each time a new make weigh bridge is installed.

can we write a generic VB code which can automatically detect all these settings and capture the weight?


What Baud Rates Are Supported By The Serial Port Object In VB 2010

Jul 12, 2011

What baud rates are supported by the serial port object in VB 2010?

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Rs232 - Slow Baud Rate And Not Supported

Jun 24, 2010

im using VB 2008 and been trying to use the RS232 at 5 baud and setting the baud to that rate seems to go ok but when put in pratice it seems way to quick and doesnt work. I put that down to its to slow baud rate and not supported. I only want to send 1 byte so tryed it manualy by this ........


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Reading Serial Port Read Data From Serial Port?

Aug 16, 2011

i am a absolute beginner and i want to use vb to receive data from micro controller through serial port using rs232 standards, i found this code to receive the data serially, can any one tell me where should i paste this code, so that the data received will be displayed in message box.Private Sub DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) HandlesSerialPort1.DataReceived


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Serial Port Example Code - Connect To A Modem Thru The Serial Port

Oct 26, 2011

The link below has code to connect to a modem thru the serial port but it is for an earlier version of VB. when I convert the code, it does not fully convert and has 4 errors that prevent building the project. can someone tell me what needs to be changed or added?


Note: the error: not CLS-Compliant

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Unable To Close Serial Port After USB / Serial Converter Disconnected

Mar 28, 2006

I have a stand alone VB.Net 2005 application that uses a serial port that generally stays open while the application runs on a Windows XP system. In trying to bullet-proof the UI, I ran into a problem when the USB to Serial Converter normally used to provide the serial port is disconnected while the serial port is open. In trying to handle the resulting error when accessing the port, I find I cannot close the port.

When trying to do so, the error message says something like "unable to close the port. You may not have sufficient permissions." Reconnecting the USB/Serial Converter does not reactivate the port.


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Read The Data From Barcode Weight Scales By Serial Port And TcpIp Port?

Nov 27, 2010

I'm mohammed from Oman ,I'm visual programmer How I can Read the Data From Barcode Weight scales By Serial port and TcpIp port

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Get FullName From Available Serial Port (Com Port) From Device Manager In Windows Form With .net?

Jul 25, 2011

I have a Windows windows form have a combo box that give me a list of available port serial with it code (Dim ports As String() =SerialPort.GetPortNames())for example( Com1,Com8,Com15,...).but I want to give me fullname of serial port in device manager for example in dvice manager is these (Comunication Port(COM1) - Printer Port(LPT1)  And USB Serial Port(COM8)).how to Get it?

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Detect The Address And Port Number Of The Parallel Port In Computer?

Jun 9, 2010

I would like to detect the Address and Port number of the Parallel Port in computer.

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The Given Port Name Does Not Start With COM/com Or Does Not Resolve To A Valid Serial Port?

Aug 2, 2011

If I uninstall the COM1 and reboot, it works. If I shut down (power off) and restart, I get the message below. If I uninstall then click on Scan for Hardware Changes,The given port name does not start with COM/com or does not resolve to a valid serial port. Parameter name:portName

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Communications :: Serial Port - Run Program, "Access To The Port 'COM1' Is Denied"?

Oct 15, 2008

Im having problem with the Serial Port. When i run my program, "Access to the port 'COM1' is denied". What does that mean? Im not sure whats happening because theres no error in my code. Someone suggest me to use 'COM2'. Which is also the same result. I have a microcontroller, programmed and run it. And i need to capture the data onto my vb, which is on a multiline textbox. How to i do that?Just to double check my code?


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DB/Reporting :: Calculate Rate For 3 Days In Different Rate Like Public Holiday,weekend And Normal For 1 Room?

Aug 19, 2009

how to calculate rate for 3 days in different rate like public holiday,weekend and normal for 1 room

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Call It Frame Rate Or Refresh Rate Of A Process?

Mar 25, 2012

How can I speed up a process? I see I should use timegettime, gettickcount, and queryperformance counter, but I have no clue where to start.

I guess you can call it Frame Rate or Refresh Rate of a process?

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Payroll Calculator : Indicate If The Tax Is At Single Rate (18%) Or The Family Rate Of (15%)?

May 7, 2009

i am trying to indicate if the tax is at single rate (18%) or the family rate of (15%)This is what i got so far i could do the rest but just cant do the Mstatus part.

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim Name As String 'Name of employee
Dim hrWage As Double 'Hourly wage
Dim hrsWorked As Double'Hours worked this week


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Serial Port Use In A DLL?

Jun 3, 2012

I am trying to buld a DLL in VB.NET 2010 that will be use to control a vending machine.Whin a call into the DLL to a function to open and setup the comport the first time its opens it just fine, but if a call into the DLL again it does not know that the port is open even if it is still open. I can check with another program and is shows the port is open and if I try to call into the DLL again to open the port I get an error that the port is already open. Any idea how to set this up so it will work

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Detect A Serial Or LAN Connection?

Feb 22, 2009

I have a Windows forms control in VB.NET. I want to detect if the computer the user runs my program on has a serial and/or LAN port connected to the computer. native windows API for detecting Serial and LAN connection? S

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Insert Serial Keys Automatically?

Nov 6, 2009

I need to automate the installation of some Antivirus applications. I can easily do it by utilizing the Process Class, but I also needed to know if there was a way to automatically input the serial key.

I thought I remember someone mentioning a property or something that could be used for that, but I can't remember what it was or who said it.

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Detect USB COM Port?

May 6, 2010

I had tried to use vb.net2008 to detect a USB mapped to a com port, I basically followed[code]...

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.net - Serial Port Communication?

Dec 30, 2009

i'm creating a windows form to send/receive data to/from serial port.At first : i send the data as string to the serial port .Second: i tried to read the string again for test the successfull transmission , but i recieved empty string


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Accessing The Serial Port?

Oct 21, 2011

I can find documentation (preferably with code samples) that will guide me through all the steps to activate and read from a serial port?

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BreakState Serial Port In CE6.0?

Oct 31, 2010

For my application a need to set a breakstate on/off of 25ms.In Xp this runs fine when I set breakstate=true and wait for 25ms and then breakstate= false and wait 25ms.In CE6.0 when I set breakstate = true, it only throws a puls.It is even not possible to keep breakstate on.

how to solve this or is there an alternative to simulate a breakstate?

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Jan 15, 2011

can we communicate to Serial port COM1 through Microsoft Robotic Studio?We are developing wireless robot which will take data from serial por

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Communications :: Like A Serial Port

Mar 8, 2010

For many years, I have sent data between 2 computers using serial ports."Here is the data", "Thank you for that data!" type stuff.Where do I get more information for doing the same thing with 2 computers that are networked together? Assume a local ethernet connection.I have experimented with serial-ethernet modems and that works well but I don't want any more hardware.Is there a good thread here I should read?I want 2 VB programs running and I want to exchange data periodically.

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Controlling The Serial Port?

Apr 23, 2006

I know things have changed in and i have Express and i want to controll the serial port. I have a program from VB6 that i understand and i tried to convert it but i get alot of errors and i have know idead what they mean. As you can tell i haven't been programming very long.

If someone can point me in the right direction for programming the serial port in VB2005 .net i would appreciate it or tell me what differences there may be.

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Nov 9, 2009

I am developing a UI for an embedded device that I have designed and built.  The device uses an FT232 chip which, when connected via USB is automatically assigned one of the COM ports.  I was wondering if there is a way to set up a loop which would automatically detect which COM port the device has been assigned.  I could then add some handshaking to verify that the port is correct.

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Get The Serial Port Available In The System?

Feb 16, 2009

I have a little code for get the serial port available in the system.

For Each pn As String In IO.Ports.SerialPort.GetPortNames
Debug.WriteLine("NAME : " + pn.ToString)


So, The PORT1 and PORT5 its ok (because this are real serial port, with a real RS232 interface), but PORT4, I don't know.

How I can do for get only true serial ports ?

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Jan 30, 2011

I am facing problem reading data from Serial port. Actually I am connecting with the hardware device called Crimp Force Analyzer. It gives the data on hyperterminal and I have to read that data from my <acronym title="Visual Basic">vb</acronym>.net program. The data is somewhat like this:


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Oct 29, 2009

I'm looking for a program that would read and import data from my serial port and then graph it. I don't mind buying it if it's not a free program.

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Oct 27, 2009

i am new to and i am writeing a program to read a serial port and if there is any thing in the buffer i want to read the data and put it in a string then clear the buffer

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How To Read The Serial Port

Jun 22, 2010

Ive got a big problem.I need to read data from the serial portIve used serialport from the toolbox , but dont know how to use it.I used to do it on a Amiga like this

open serial("serial.device".0.2400.0) rem(open port)
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Jan 21, 2009

I am trying to interface with a Sylvac Gage over the Serial Port, but I can not get read any information sent by the gage.I am using the IO.Ports.SerialPort Object (called serialPort), and I can successfully write to the device. I can tell it to turn off by: serialPort.Write("off" & vbCrLf)But I can't seem to get any information back from the Gauge when I ask it to send information serialPort.Write("?" & vbCrLf)


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Listening To The Serial Port?

Sep 21, 2011

I am trying to listen to the COM3 port and display the output in the TextBox.If I understood correctly I will have to implement this by using eventhandlers, delegates.I tried following these articles:


And this is the code I came up with...Unfortunately it doesn't display anything. App just starts display "True" and no data is being displayed.I am monitoring Arduino platform which I know is sending data constantly.

Imports System.IO.Ports
Imports System.Text
Public Class ArduinoSerial


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Open All Serial Port?

Jun 9, 2011

how to open all serial port in i know how to open by getportname..but how to open all??can we do it?

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Printing To A Serial Port?

Aug 31, 2011

how difficult is it to print to a serial port?or will windows "find" the printer?

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Reading From A Serial Port?

Feb 22, 2008

I am working on barcode reading software. Runs ok, but reads at the most 8 characters at a time. How can I get it to read the entire barcode rather than in pieces?

Here is a snippet of my code 

Imports System.Data.SqlClient
Imports System.IO.Ports
Public Class Form1


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Receiving Sms Using Serial Port?

Aug 5, 2009

I don't really quite understand how the receiving works but could anyone please help me on how does the receive sms works when using serial port and AT-commands? Here is how I use my code:

Imports System.Windows.Forms.Form
Imports System.Text.Encoding
Imports System.Threading
Imports System.IO.Ports


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Receiving The Sms From The Serial Port?

Jun 28, 2010

I am doing a project on receiving the serial port. but the problem is that I am a lost now because I am in the dead end because my project is near the dateline. I am at blank now. Can anyone help me to teach me step by step on how to do the part on receiving sms using the modem?

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Serial Port - String To Hex

Nov 14, 2011

I m writing serial port program i can send hex data without any problem but i stuck when I get response in buffer for example response is a string "?-??"


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Serial Port - USB Crash

Apr 20, 2010

There is a bug report [URL] on serious problems that can occur if you are using a USB to serial port converter and the user pulls the USB while the serial port is in use. Apparently the bug is still present in VB2010, and Microsoft still has the bug closed.

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Serial Port In VB 2008

Apr 9, 2011

I am trying to make my own hyper terminal. I have used the serial port component and after setting all the configuration for the com port I press the button Enable ComPORT. The problem is that, when I press the enable com port button the program goes unstable untill the reception starts from the COM port. After the reception is start the program starts working fine.


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